Windows 8 Task Manager shows 49% CPU utilization but Process Explorer shows 100%

process-explorertask-managerwindows 8

The Windows 8 Task Manager is showing 49% CPU utilization while Process Explorer is showing 100%. What would be causing this? Is it a Windows 8 bug?

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Best Answer

My guess would be that Task Manager takes into account the current CPU speed and thus shows utilisation relative to the top speed. Task Manager just takes the CPU utilisation as returned from the system. In your case they are off by a factor of two, just like the current and maximum CPU speed.

You could try changing your power plan not do clock down the CPU to see whether they then report the same.

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